Is it fair to say bigger sticks give better control? I'm finding the more they take up your hand space, the better they fit and have superior control as a result.

I wouldnt say it necessarily gives better control. If I needed a ton of finesse or I was playing grindcore, I probably wouldn't use the Shedders.

They just feel more comfortable if you're playing more on the whole note/lower tempo side of things. The extra weight increases the sense of power you have over the drums, but I think also helps water down the urge to place too many notes into fills.